2157924097 has 8 divisors (see below), whose sum is σ = 2512731456. Its totient is φ = 1814749872.

The previous prime is 2157924071. The next prime is 2157924103. The reversal of 2157924097 is 7904297512.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2157924097 - 2⁷ = 2157923969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2157924047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2907883 + ... + 2908624.

It is an arithmetic number, because the mean of its divisors is an integer number (314091432).

Almost surely, 2^2157924097 is an apocalyptic number.

It is an amenable number.

2157924097 is a deficient number, since it is larger than the sum of its proper divisors (354807359).

2157924097 is an equidigital number, since it uses as much as digits as its factorization.

2157924097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5816567.

The product of its (nonzero) digits is 317520, while the sum is 46.

The square root of 2157924097 is about 46453.4616255882. The cubic root of 2157924097 is about 1292.2465704119.

The spelling of 2157924097 in words is "two billion, one hundred fifty-seven million, nine hundred twenty-four thousand, ninety-seven".